Ruling · Nāga Caturthī · 1901

Friday 15 November

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 617 minutes.

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Friday 15 November

Taken. The only midday Caturthī reaches.

madhyāhna begins 11:39  12:27 madhyāhna ends
10:5111:1511:3912:0312:2712:5113:15

48 of 48 minutes covered

Midday of Saturday 16 November

Caturthī is absent from madhyāhna. Not taken.

madhyāhna begins 11:39  12:27 madhyāhna ends
10:5111:1511:3912:0312:2712:5113:15

0 of 48 minutes covered

Caturthī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 23:18 on Thu 14 Nov to 01:22 on Sat 16 Nov.

    1901-11-14T15:17:36Z → 1901-11-15T17:21:47Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 15th, 11:39–12:27 on the 16th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 15th and 0 of 48 on the 16th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: paraviddha → only-day · margin 37014 s

  5. 05

    Ruling

    Nāga Caturthī, Baoding, 1901: Friday 15 November.

    confidence: determinate

Say it like this

In Baoding, Nāga Caturthī 1901 falls on Friday 15 November. Caturthī runs from 23:18 on Thu 14 Nov to 01:22 on Sat 16 Nov and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1901/naga-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 15 Nov
Ahargaṇa, classicalDisc centre, no refractionFri 15 Nov
compat-drikpanchangComparison profileFri 15 Nov
No institution has a recorded ruling for Baoding.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/naga-chaturthi · ruleset 2026.3-draft

Month
Kārtika, amānta
Pakṣa · aṅga
Śukla · Caturthī
Kāla
Madhyāhna
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 104

“S 4 Naga caturthi (paraviddha and madhyahnavyapini).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceCaturthīMadhyāhna 14thCoveredMadhyāhna 15thCoveredRuled
Los Angeles07:18 → 09:2211:1348 min11:130 min14 Nov
Chicago09:18 → 11:2211:1148 min11:1111 min15 Nov
Jersey City10:18 → 12:2211:1748 min11:1748 min15 Nov
Port of Spain11:18 → 13:2211:2748 min11:2748 min15 Nov
London15:18 → 17:2211:210 min11:2148 min15 Nov
Durban16:48 → 18:5210:470 min10:4748 min15 Nov
Dubai18:59 → 21:0311:200 min11:2048 min15 Nov
Delhi20:39 → 22:4311:320 min11:3348 min15 Nov
Kolkata20:39 → 22:4310:480 min10:4848 min15 Nov
Singapore22:13 → 00:1711:200 min11:2048 min15 Nov
Sydney01:18 → 03:2211:160 min11:1648 min15 Nov
Suva03:13 → 05:1711:220 min11:2248 min15 Nov
Profile · tradition
pac-rp@2026.1 · smarta
Rule
naga-chaturthi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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